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// Copyright Louis Dionne 2013-2017
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
#include <boost/hana/assert.hpp>
#include <boost/hana/concept/struct.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/find_if.hpp>
#include <boost/hana/integral_constant.hpp>
#include <boost/hana/optional.hpp>
#include "minimal_struct.hpp"
#include <laws/base.hpp>
namespace hana = boost::hana;
using hana::test::ct_eq;
template <int i = 0>
struct undefined { };
int main() {
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(obj(), undefined<>{}),
hana::nothing
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(obj(ct_eq<0>{}), hana::equal.to(hana::int_c<0>)),
hana::just(ct_eq<0>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(obj(undefined<1>{}), hana::equal.to(hana::int_c<1>)),
hana::nothing
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(obj(ct_eq<0>{}, ct_eq<1>{}), hana::equal.to(hana::int_c<0>)),
hana::just(ct_eq<0>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(obj(ct_eq<0>{}, ct_eq<1>{}), hana::equal.to(hana::int_c<1>)),
hana::just(ct_eq<1>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(obj(undefined<0>{}, undefined<1>{}), hana::equal.to(hana::int_c<2>)),
hana::nothing
));
}
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